But the origins of the [97-91 Game 4] comeback might go back even further, to a May 25, 2002, playoff game, when the Celtics overcame a 21-point fourth-quarter deficit to defeat the New Jersey Nets, 94-90.
"For me, it was deja vu all over again, watching the game [Thursday] night," said former Celtics guard Kenny Anderson, who is in Los Angeles for a promotional event. "Paul Pierce was the only guy who played in both games, and I knew he was sitting in the huddle saying all the things we said.
"He had been in that situation before and he pretty much knew what could be done."
The Celtics entered Game 3 of the '02 Eastern Conference finals tied with the Nets. And the Nets led by 26 points in the second half, but were outscored, 41-16, in the final quarter.
The Garden crowd had been booing in the third quarter, but ended up cheering on the Celtics in a chaotic final quarter. At the time, the Celtics said they were motivated by an inspirational speech from Antoine Walker.
"[Walker said] no matter what happens in this fourth quarter, win or lose, we're just going to go down fighting," Pierce said after that game. "We're not going to get embarrassed tonight."
Pierce had been in a shooting slump, connecting on 5 of 34 shots in the series, then scored 19 points in the final quarter.
"Antoine was so positive in timeouts," former Celtics coach Jim O'Brien said. "He was saying to Paul, 'You just take over this [dang] game. You just start carrying us. Attack, attack, attack.' "